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Special Variables

Draft MDC Standard

2.9 Special variables

If appending the information about a new error condition (See 6.3.2 of Section 1) to $ECode or $STack($STack,"ECODE") would exceed an implementation’s maximum string length, the implementation may choose which older information in $ECode or $STack($STack,"ECODE") to discard.

The value of $SYstem as provided by an implementor must conform to the requirements for a local variable subscript (see 2.3.3).

The special variables $X and $Y are non-negative integers (see 2.7). The effect of incrementing $X and $Y past the maximum allowable value is undefined. (For a description of the cases in which the values of $X and $Y may be altered see 8.2.35 of Section 1; for a description of the type of values $X and $Y may have see 7.1.4.10 of Section 1).

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Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 14-Nov-2023, 21:40:26.

For comments, contact Ed de Moel (demoel@jacquardsystems.com)